Shoulder milling

For our second milling operation – shoulder milling – we will machine the circular slot in the center of our part:

Figure 9.16: The slot profile

It has a diameter of 80 millimeters and a depth of 10 millimeters. As mentioned before, we will use the same tool already used for the first facing operation.

Calculating the cutting parameters by hand

Before launching the command on Fusion 360, we should evaluate the cutting parameters. However, the bad news is that this time, instead of using CoroPlus, we will try to calculate them on our own. Be sure of this – it will be a bit trickier but way more satisfying!

First of all, we should understand our machine specifications:

• We will use a Haas VF-1
• The maximum cutting power is around 22.4 kW
• Its maximum rated spindle speed is 8,100 RPM
• The maximum torque is obtained at 2,000 RPM with a value of 122 Nm

These values will be needed to check...